I wanted to upload the final result as promised. I ended up swapping over the 600 group. I had to cold set the frame but in retrospect it does ride fantastic and actually is very decent.
I wanted to keep it somewhat old school so kept the old quill stem and the old, but surprisingly comfortable saddle. I managed to source one Mavic Open SUP CD rim but the second hasnt crossed my way yet. Until now i have been riding my DT Swiss training wheels but i actually like the look even though they are more modern then the rest. The most modern addition is probably the brifters but I am a sucker for a clean cockpit.